dominic di-natale has more from los angeles. nice to talk to you. >> reporter: great to talk to you, how are you doing. >> greta: very well. dominic, tell the viewers who the doctor is and what he did for the u.s.? >> the pakistani doctor who helped the cia verify the location of bin laden and his compound in pakistan. he basically ran a hepatitis vaccination program set up by the cia and went to the compound under the pretext of vaccinating. and the calls to the compound to set up the visits were copied or traced by the cia and they've got a voice print of bin laden's personal courier and they knew they were on to the al-qaeda leader. >> and so our navy seals go in and take out usama bin laden and leave behind the doctor and he's arrested by the pakistanis, isi, thrown in prison and tried for treason and 30, 35 years. and have we done anything to get him back or to help free him? >> the efforts to get the doctor out have been very weak, quite frankly, on this side of the u.s. government, both at the cia level and also the state